Crude Oil

Crude Oil is one of the Resources in Oxygen Not Included. It is heavier than Water, Polluted Water and Petroleum.

Occurrences
Crude oil can be found in the Oil Biome, which is located above the Volcanic Biome on the bottom of the map. It can also be extracted from an untapped Oil Reservoir by constructing an Oil Well over it. It stacks up to 870 kg/tile when not pressurized.

Production

 * Slickster breathes Carbon Dioxide and excretes Crude Oil.


 * Oil Well tapping over Oil Reservoir can produce Crude Oil from Water and power.


 * Leaky Oil Fissure produces Crude Oil.

Usage

 * Oil Refinery can produce Petroleum from Crude Oil with 50 % efficiency. It requires Duplicant operation.


 * Alternatively, Crude Oil can be heated to above 401.85 °C and below 538.9 °C to get Petroleum with 100 % efficiency. It can be easily done by venting heat from nearby magma, or by slightly heating oil from a Leaky Oil Fissure.
 * Despite Petroleum also being a liquid, Crude Oil that converts into Petroleum while in a pipe will still burst the pipe.
 * Hence, using Metal Refining with Liquid Reservoirs to convert them would be a bad idea.
 * On the other hand, this method can be used to preheat Crude Oil. A Thermo Sensor confined in a one-tile insulated cavity that is heated by a one-tile segment of Radiant Liquid Pipe can be used to control the process.


 * Despite having heat capacity 2.5 times lower than Water, Crude Oil has 4 times the thermal conductivity and a great temperature range (440 °C), which makes it a decent mid-game coolant.
 * Yet, there is no reason to keep Crude Oil around, other than to drip it into the molten core regions so that it flash-boils into Sour Gas and then Natural Gas. If it is being considered as a coolant or working fluid, Petroleum is better in many ways.

Trivia

 * Before the Automation Upgrade, Crude Oil could not freeze. This made it an excellent tool for cooling.

Нефть